Immortality?

"Oh? You want to begin research on the Impure World Reincarnation?" Orochimaru took a sip of tea, propped his chin on his hand, and looked at his disciple with an amused expression.

"Yes, Teacher. I think the Impure World Reincarnation has great practical value." Kenichi Amamiya answered honestly. He truly wanted to study the Impure World Reincarnation and uncover something from the First that suited him better.

Although Kenichi Amamiya's strength had advanced by leaps and bounds after obtaining the First Hokage's Sage Body, for some reason, he had not inherited the ability to use Wood Release.

So Kenichi Amamiya wanted to start with the First Hokage's Sage Body. Given the First's talent for Senjutsu, once Kenichi Amamiya mastered Senjutsu, his strength would improve tremendously.

"I wouldn't recommend that you use the Impure World Reincarnation right now. This forbidden technique is still being refined. If you want to try it, you can reanimate some ninjas who aren't particularly strong." Orochimaru shook his head.

His disciple really was impatient. It always felt as if he believed he did not have enough time and wanted to stick his hand into everything.

Besides, summoning the First right now carried a very high risk of something going wrong. If they left behind even the slightest trace, people would become suspicious, and that would be troublesome.

Hearing this, Kenichi Amamiya understood his teacher's concerns.

After all, Kenichi Amamiya understood his teacher's way of thinking to some extent.

"Come to think of it, how is that research project you were advancing on your own going?" Orochimaru asked with interest. He had previously reviewed his disciple's experimental records, and that research was indeed quite interesting.

Though in his view, it also had considerable limitations.

"It's progressing very well, Teacher. A few more experiments should yield Breakthrough Progress." At the mention of his experiment, Kenichi Amamiya smiled.

The research Kenichi Amamiya had been advancing recently was not extensive. On one hand, he had been following Orochimaru in their routine research on the First Hokage's Cells and the Sharingan.

That work continued because of the Cooperation with Danzo. Root provided substantial funding and experimental materials.

But what Kenichi Amamiya cared about more was his own research: perfecting Cancer Bestowal Ninjutsu, the ninjutsu he had created himself.

So far, the progress had been quite satisfying to Kenichi Amamiya. He could now spray nicotine onto someone's skin and create cancer in their lungs.

After casting the technique, Kenichi Amamiya could already induce late-stage Lung Cancer in a Genin's lungs.

The drawback was that it took too long and required spraying nicotine, so it still needed improvement.

"From what I've seen of your experiment, the target's combat ability would be severely affected. But would your research work on Chunin and Jonin?" Orochimaru was quite concerned about his disciple's research.

After all, this disciple had already milked quite a bit of research funding from him and had even taken five Genin-level experimental materials.

If he had not seen that his disciple had actually produced results, he would have wanted him to give up this path.

"Since I don't have Chunin- or Jonin-level experimental materials yet, I can't determine that for now." Kenichi Amamiya shook his head. He certainly coveted Chunin, but he had never gotten his hands on one.

After all, this was not wartime. Experimental materials were not so easy to find.

"Human body structures are broadly similar. It should work." Orochimaru had high hopes for the research his disciple was advancing.

It looked useless, but those things called Cancer Cells possessed remarkable properties. By studying them, perhaps they could work backward and find a way to make the body immortal.

However, Orochimaru had not placed all his hopes for immortality on Cancer Cell research. His research into Living Corpse Reincarnation had also been ongoing.

It was just that the technique seemed to cause a certain degree of damage to the soul. The damage would most likely recover through rest after reincarnation, but no experiments had been conducted yet, so Orochimaru could not be certain.

If Cancer Cells had not been similar to Hashirama Cells, Orochimaru might have tried using Cancer Cells to make himself a body.

"Teacher, on the path of science, it won't do to rely entirely on theoretical data and deductions!" Kenichi Amamiya declared righteously. Orochimaru glanced at him, then waved a hand.

"I can give you one Chunin-level experimental material, but you'd better use it sparingly." Orochimaru spoke irritably. This disciple was getting bolder and bolder.

He even dared make demands of him now.

"Thank you, Teacher!" Kenichi Amamiya became excited. A Chunin-level experimental material—he was not incapable of defeating one now, but turning a ninja into experimental material was extremely troublesome.

Kenichi Amamiya could not exactly run into the village and kidnap a Chunin himself, could he? Though he had indeed considered it, because he truly wanted to see the difference between how Chunin and Genin reacted to this ninjutsu.

But considering the risks of exposure, he had behaved himself. Still, Kenichi Amamiya had already made up his mind: when the Nine-Tails Attack came, it would be the perfect time to harvest experimental materials.

". . . Teacher, are you going to watch the experiment as well?" Kenichi Amamiya gave Orochimaru beside him a strange look.

Normally, his teacher barely paid attention when he conducted research. He had no idea what was going on today for his teacher to suddenly take an interest in this matter.

"Mm. There's nothing to do today." Orochimaru remained calm. Other than when doing research, he spoke very little most of the time.

Kenichi Amamiya had no objection. He followed his teacher to collect the experimental material, then brought it to his research room.

"Teacher, please disinfect yourself first." Kenichi Amamiya spoke politely. Cancer Cells might run rampant inside the body, but when facing external bacteria and viruses, they were basically a Younger Brother.

That was why a sterile room was so important. Kenichi Amamiya had spent considerable effort transforming his research room into a sterile environment.

Orochimaru disinfected himself without comment, then followed Kenichi Amamiya inside.

After securing the experimental material, Kenichi Amamiya skillfully began his research.

He sprayed nicotine, then precisely injected refined Yang Release Chakra into the lungs. Immediately afterward, Lung Cancer cells appeared.

Kenichi Amamiya was very satisfied. He had spent this period researching how to make Yang Release Chakra precisely affect Cancer Cells, and now he had achieved results.

I read everyone's comments, but the protagonist is not going around messing with everything. He does have that idea for Chimera, but for now he is only laying the groundwork, not planning to research it yet.

Deidara was also just a passing idea of the protagonist's. After all, Deidara was probably only just born by now.

If any readers have ideas for technology that would suit the development of the ninja world, feel free to mention them. I will seriously consider them and write them in.

Thank you, everyone.